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Patent Searching and Data


Matches 151 - 200 out of 2,104

Document Document Title
WO/1999/024080A1
The invention provides a method of magnetic resonance investigation of a sample, said method comprising: (i) reacting para-hydrogen enriched hydrogen with a hydrogenatable MR imaging agent precursor containing a non-hydrogen non-zero nuc...  
WO/1999/015239A1
The invention relates to a method for reductive dehalogenation of halogen-organic substances which can be used in solid or liquid mixtures of substances. When the parameters of the inventive method are correspondingly adapted, liquids an...  
WO/1999/006145A1
The present invention relates to a process for preparing a microcomposite comprising a highly fluorinated ion-exchange polymer containing pendant sulfonate functional groups, said polymer existing as aggregated particles entrapped within...  
WO/1999/004861A1
Disclosed is a method for eliminating halogenated and non halogenated waste, whereby waste is reacted with products containing metal oxide in an oxygen-free medium at temperatures ranging from 800 °C to 1100 °C.  
WO/1998/011057A1
A process for preparing in a good yield optically active erythro-3-amino-2-hydroxybutyric esters having a high purity and serving as an important intermediate of pharmaceuticals, particularly HIV protease inhibitors. The process is chara...  
WO/1998/009725A1
This invention concerns a catalyst which, for instance, is suited for hydrogenation and consists of at least one catalytically active metal in a low-valence state on an essentially carbon substrate. This substrate consists of carbon whic...  
WO/1997/044304A1
The description relates to a process for the catalytic hydrogenation of terpenoids with water in the presence of a transition metal catalyst, in which the hydrogenation is performed in the homogenous phase in the presence of a catalyst c...  
WO/1997/038955A1
A process for the selective hydrogenation of aliphatic or aromatic substrates under supercritical or near critical conditions. Hydrogenation is effected using a heterogeneous catalyst in a continuous flow reactor containing a supercritic...  
WO/1997/034713A1
In order to treat organic chlorine compounds, which are generally hard to decompose, by a method, which poses no problem in terms of processes and is excellent in safety and economy, excess alkali is used to make the treating complete wh...  
WO/1997/034695A1
Proposed is a particularly cost-effective, versatile and environmentally acceptable method of manufacturing a heterogenous catalyst designed for use without a support and consisting of at least one catalytically active constituent (A) an...  
WO/1997/031894A1
Process for the preparation of carotenoid having general formula (I) and pigments which contain said compound as basic component. They are obtained by reacting natural or synthetic compounds having general formula (II), or the plant extr...  
WO/1997/026233A1
A method for the isomerisation of organic ethylene compounds comprising one or more carbon-carbon double bonds, wherein the compounds are contacted with an aqueous solution of at least one nickel (0)-derived complex and a water-soluble t...  
WO/1997/013763A1
A chiral ligand having structure (I) wherein AR is any aromatic and/or ring structure, and R is selected from the group consisting of aryl, oxygenated aryl, alkyl, oxygenated alkyl, AR, oxygenated AR and combinations thereof.  
WO/1996/032400A1
The invention relates to a compound of formula (I), wherein R1 is C1-C8alkyl, phenyl or phenyl substituted by from 1 to 3 C1-C4alkyl or C1-C4alkoxy substituents; R2 and R3 are each independently of the other hydrogen or C1-C12alkyl; and ...  
WO/1996/027580A1
A process for the hydrogenation of unsaturated cyclic and polycyclic compounds to saturates is provided wherein the reactor is operated at a pressure wherein the reaction mixture is boiling under low hydrogen partial pressure in the rang...  
WO/1996/016922A1
A halogenated compound (I) containing one or more >C=O, olefinic and/or aromatic >C=C< groups is hydrogenated for producing a halogenated compound (II) having no or a decreased level of >C=O, olefinic and/or aromatic >C=C< groups. In the...  
WO/1996/001691A1
The present invention is directed toward a catalyst composition comprising a catalyst prepared by a process comprising: (a) impregnating an oxide precursor selected from the group consisting of rare earth oxide precursors, yttria precurs...  
WO/1996/001304A1
A typical traditional reactor for hydrogenation consists of a tank filled with a liquid and a gas and a small particle catalyst. The reaction is carried out at high pressures and high temperatures. Lack of gas on the catalyst surface lim...  
WO/1995/028993A1
A method of decomposing a halogenated aromatic compound with an alkaline substance safely without fail, which comprises bringing the aromatic compound into contact with the alkaline substance in an aprotic polar solvent at a temperature ...  
WO/1995/024964A1
Catalysts suitable for hydrogenating organic compounds, essentially containing 65 to 80 % nickel calculated as nickel oxide, 10 to 25 % silicon calculated as silicon dioxide, 2 to 10 % zirconium calculated as zirconium oxide, 0 to 10 % a...  
WO/1995/023123A1
Catalytic dehydrogenation wherein feed is passed in one direction through the bed in a first cycle and heating gas is passed in an opposite direction in a second cycle to provide the endothermic heat of reaction and regenerate catalyst. ...  
WO/1995/019950A1
The present invention relates to a method of reacting polyamides or mixtures thereof with ammonia to obtain a mixture of monomers. The reaction is carried out in the presence of certain Lewis Acid catalyst precursors.  
WO/1995/013874A1
Disclosed are catalysts based on: a) a magnetizable core which, b) can as needed be coated with a binder, and c) carries on its surface catalytically active metals or metallic compounds.  
WO/1995/011081A1
Proposed is a method of producing catalytically active multi-metal oxide compositions containing Mo and V, the method calling for a catalyst precursor compound to be calcined at a temperature of 300 to 450 �C in an atmosphere consistin...  
WO/1995/009166A1
A process for the preparation of the compound of formula (I) or a salt thereof which comprises reducing the compound of formula (II) or a salt thereof. The novel intermediate of formula (II) and processes for preparing it are also descri...  
WO/1995/008391A1
Catalysts of general formula (I): [AaBbOx]p [CcDdFeeCofEiFjOy]q, in which the variables have the following meanings: A = bismuth, tellurium, antimony, tin and/or copper; B = molybdenum and/or tungsten; C = an alkaline metal, thallium and...  
WO/1995/006036A1
A process is disclosed for preparing pyrazole and its derivatives having formula (I), in which the residues R1, R2, R3 and R4 stand for hydrogen, halogen, nitro, carboxyl, sulfonyl or C-organic residues, from alpha,beta-unsaturated carbo...  
WO/1995/002567A1
A catalytic asymmetric reduction process, which, by hydrogenating trisubstituted olefins, yields a corresponding organic compound having a high level of enantiomeric purity is disclosed. The process is also effective for the catalytic as...  
WO/1995/000207A1
A method of decomposing halogenated aromatic compounds safely without fail, which comprises bringing a solution of a halogenated aromatic compound in a hot-alkali-resistant polar solvent into contact with an alkaline substance at about 1...  
WO/1994/014731A1
A process for removal of halide from a halide containing organic compound in a solvent, a process for simultaneous removal of halide from a halide containing organic compound and reduction of an oxygen containing organic compound in a so...  
WO/1994/010083A1
The method proposed is characterized in that, in a first step, the substance to be de-iodized is suspended or dissolved in water in a reactor and mixed with sufficient quantities of organic and/or inorganic bases and, following the addit...  
WO/1993/016761A1
Disclosed is a method of photochemically oxidizing gaseous halogenated organic compounds, an apparatus for photochemically oxidizing gaseous halogenated organic compounds, a lining insert for an apparatus for photochemically oxidizing ga...  
WO/1993/009078A1
Active methine compounds are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the presence of a phase transfer catalyst which is a tetraalkylonium hydroxide. Chlorinated products, preferably tertiary al...  
WO/1992/019630A1
Chiral tridentate bis(phospholanes) which coordinate as ligands in a meridinal fashion on an octahedral metal or which coordinate in square-planar environments are provided with a method for their preparation. They are represented by for...  
WO/1992/012110A1
A method for hydrogenating ethylenically unsatured organic compounds is disclosed. This method is implemented in a homogenous medium containing a hydrogenation catalyser formed by a complex of ruthenium with a phosphine, which comprises ...  
WO/1992/010447A1
The present invention provides an efficient process for the production of ethylene or a mixture of ethylene and vinyl chloride, in which some 1,2-dichloroethane (EDC) may also be produced, by reacting chlorine with ethane. The process is...  
WO/1992/009552A1
Process for preparing alpha-arylpropionic acids by catalytically asymmetrically hydrogenating alpha-arylpropenoic acids prepared from alpha-aryl ketones.  
WO/1992/003379A1
Zeolites L, and in particular zeolites KL comprising silicon, aluminium and 1 to 10 % by weight of non-exchangeable zinc, are zeolites with a reduced overall electronegativity, and may be used in processes where alumino-zeolites L are co...  
WO/1992/003382A1
A method of producing an anhydrous niobium or tantalum pentafluoride involving reacting the corresponding pentoxide or oxyhalide with an excess of anhydrous hydrogen fluoride in the presence of a sufficient dehydrating agent (e.g., COCl2...  
WO/1991/006523A1
Described is a method of preparation of fluorobenzenes and fluorotoluenes of the formula (I) in which X is H or a methyl group, R?1¿, R?2¿ and R?3¿, independently of each other, are at least one of the residues H, F, Cl and C¿1?-C¿3...  
WO/1989/000452A1
A method for selective dehydrogenation of a compound, comprising contacting a compound of formula (I), wherein each R1, R2, R3 and R4 is independently selected from the group consisting of H, (C1-C20) alkyl, (C3-C20) cycloalkyl, (C6-C20)...  
WO/1988/005767A1
A continuous process for hydrogenating an unsaturated organic compound to a corresponding hydrogenation product which process comprises: (a) providing a hydrogenation plant comprising first and second hydrogenation zones connected in ser...  
WO/1988/002268A1
In order to effect dehalogenation of hydrocarbons, in particular polychlorinated aromatic compounds, which are also found in oils, oil sludge or in sea ooze or in the earth, said compounds are dispersed by the DCR process, and the finely...  
WO/1986/002065A1
Process for preparing alpha, beta-unsaturated ketones and 1,3-cyclohexanedione derivatives. The 1,3-cyclohexanedione derivatives are useful as intermediates for pesticides especially herbicides.  
WO/1985/005354A1
Benzylic and aromatic mercaptans are desulphurised by contacting the mercaptan with carbon monoxide at elevated temperatures in the presence of an aqueous hydrocarbon and a cobalt carbonyl catalyst.  
JP6512424B2  
JP6470899B2  
JP6342177B2  
JP2018039841A
To provide alkynes and methods of reacting alkynes with 1,3-dipole-functional compounds.According to the present invention, 1,3-dipole-functional compounds (e.g., azide functional compounds) can be reacted with certain alkynes in a cycli...  
JP2017128556A
To provide a method for decomposing a chemically stable organic chlorine compound, such as PCB, to render it harmless.Citric acid and magnesium are used to generate active hydrogen at normal temperature and normal pressure, and a reducti...  

Matches 151 - 200 out of 2,104